Improvement in caps for jars, cans



No. 38,810. v PATENTED JUNE 9; 1863.

J. K. CHASE. GAP FDR JARS, GANS, 6m.

or otherwise, may be adopted.

. i UNITED ySTATES JoHNK. CHASE, or nnwvonk, Ngv."

tMPKRovEMENT INCAPSVFQR'JARS, CANS, am.`

Specilication forming'part ofY Letters Patent No.. 38,8!0, dated June il, 1563.

To @ZZ whom 'it may concern.:

Be it known that I, JOHN K. CHASE', of the State, county, and city of New York, havein- 'vented a certain new and useful improvement in tops or caps for jars to contain and preserve fruit' and other articles, or for analogous purposes; .and I- hereby'declare that the followingis a.t`ull, clear, and exact description thereof, reference being -had to the drawings which accompany and form a part of this speciication. `y f Ot' the drawings, Figure l a perspective view ot' my improvement, showing the cap yfrom the outside. Fig. 2 represents ,the inside thereof', exhibiting the thickness of the ring which conxpospes its sides. Fig. 5 is a'deli-neation 'of `a short piece of oneot the strips ot' which this ring is made.` Fig. 3 illustrates in perspective an adaptation of myinvent'ion.

which will'be hereinafter set forth'. Fig. 4 is! a'vertical section of the same with the cap slightly removed from the nozzley to indicate more piainly theadjustmentot' the parts.

This improvement consists of a novel construction and arrangement of that class ofjarfasteners w-hichare commonly called screw- 'topsgf and is designedto constitute an extremely cheap, simple, durable, easily manip- '1.1lated, and effectual sealing-cap for all kinds of bottles, jars, or other similar articles which requiretobe made air-tight;

To enable those skilled in the art lto make antll use my invention, I will describe it iu detai I form iny- .cap out of tin, brass, or any suitable sheet metal, though I prefer tin, on account of its cheapness.'- The screw which I put'into it is what is called a corkscrew threadi Any other style orany shape of thread which is desired, whether V, square, ItV is made .by placing the sheet metal lat between malel andfemale dies properly grooved to impress upon the metal such athread as is shown in` Fig.l3. It will be observed that this screw is entirely' on the inside ofthe cap-that is to say, the depressions between the ribs which constitute the threadare all in the plane of ,the inner face of, the metalyso that there are no projections on its outer surface correspondlng with them. It is consequently but onehalf a double-threaded screw, and hence less niecty is required in putting it in, and it cau be made with greater ease, rapidity, and cheap'ness than it' formed in the usual way. The dies may 'be of "the proper size to enable as many ot lthese-scrcwthreads as desired to be vstamped at once-'out of a single' sheetof wide as the intended depth ofthe cap. These'- strips are then bent into a ring and strongly soldered, and a circular disk` of the same orotlier metal, of a' diameter slightly greater than that 'of the ring,issoldered over one edge ot the latter to` form the top ofthe -.cap, like 'a box-cover. ring is t-hen^hem1ned" and thrown out77 a. 'lit-tlc, as shown in thel drawings, or inadestraight up and down, so as to set properly onto'the gasket. cap stitter and bet-ter able to retain its-shape than any other in the market, and-I pret'erto dispense with the throwing out of the edge and to leave it straighter,becauseit will in the latter condition be morel certain to secure an airtight tit over the gasket. The neck ofthe jar or other vessel to which my improvement is applied should have blown or otherwise formed-*upon its exterior athread to correspond with that of the cap, and the'latter is screwed upon it, a rubbergasket or suitable packing being employed, as usual, between the cap and the jar or vessel. By this means I produce a better cap than any others hit-herto' known, while at the same time I am enabled to make it more cheaply and far more quickly than has heretofore been possible. By the stamping process the thread is completed ina small fraction of the period re quired for putting itin by other devices, and if, as already suggested, the. diesa-re prepared so as to stamp an entire sheet of metal at once, va large numberof the screws can be made as quickly as one. No expensive tools-sueltas lathes, chucks, &c.-are needed for the manufacture, as is the case with other styles of caps, and I thus save materially iu the'investment of capital and the wear and tear of ma chinery. llloreoventhe disadvantagesof other articles ofthe kind, such Las multiplicity of parts, diiculty of manipulation, lack of cercause the gasket by being improperlylocated, as is unavoidable in some caps, to impart a PATENT OFFICE-l.

metal, and the latter is then cut into strips as The opposite or lower edge of the' he hemmin r ren lers the taiuty of an air-tight t, and the tendency to Vtaste .to the contents of the jar, are entirely obviated by nlyfiinproved manner of construetion.

ends of the strip whichconta-ins the thread' `slightly outward, when it is bent into a ring,

as before described; TheseI edges are then rmly soldered, and thus form a small knob or projection, a, upon one side of the cap at its seam, by which the cap can either be tightly secured or readily loosened after it has become set by lapse of time and the exhaustion of the air in the jar or vessel. It is found thatwhen the latter has been sealed for a certain-period considerable force is required to start the top, and more usually than weinenJ for whose useA in families these articles vare mainly designed, can exert. vIt has, therefore, been the practice to solder two points or starts upon the top of the cap, over which a wrenchor. key'is fitted, in order'to fasten or' remove the cap. This mode of construction is attended with ail expense and trouble which it is desirable to avoid, and the device of the knob or projection whichg-I- have v described' constitutes an economical and successful sub-4 stitute for'it. 4

It will of course be understood that though I have referred above only tocaps, nozzles,

when required, are to be formed inv the lsanne way, except that` the disk which makes the top of the-'fornier is omitted.

I also contemplate combining with my im' proved screwfcap and nozzle the spout or lip of oil-cans, molassesfcups, and sirnilar'articles in such a manner that all together shall prac-- tically be but a single piece, whereby l ani enabledto provide vessels of this character y 4 with anmrtight stopper vof.gwoonEqmnifyj which has never 'been' done before: Figs. 3 and 4 illustrate this part of my invention. b is the spout or lip, providedwith the passage c, for the discharge of the content/sof the ves sel.' At the' v opposite end jof the spout is -formed'a bowl -shaped or 'otherwise formed Yprotnberance,` d, perforated with the holee,

communicating with the interior of the can or cup. One of niy improved nozzles is soldered into this aperture, as shown, and the cap' g made to fit it. The whole is then secured to the neck of the vessels either by the .latter being made to tit it just. outside of the aperture e, where it is' to be soldered, `or in any other convenient manner, thus -furnishiingan.ex-

ceedingly useful device for a great variety of purposes. Y l

' vI-do not claim a screw-cap or nozzle consid" ered by itself; but,

4Having thus described my invention,` what clairn as new, and desire to secure by Letters latent, is-

1. The mode, substantially as described,'ot`

constructing caps for the purposes mentioned;

2. The combination, with a cap for the.purf, poses enumerated', whether. constructed substantially as' described or not, of a ,knob or` projection for facilita'ting'4 the tighteninglor loosening ot` the cap, .as set forth. y 'y 43. The combination ot' a cap and nozzle. whether constructed substantially 'as described or not, with the spouts of: oil-'cans or molassesvcups, or the lips of bottles and other sirnilar articles,l substantially as set forth.

' y l, JOHN l.' CHASE. `Witnesses:

f S. D. CozzENs,

' ANDREW J. Tono. 

